One vertex per element, one color per generator, with an edge from x to x·s.
(2,3)(4,11)(8,10)(12,16)(17,18)(19,23)(20,29)(21,24)(22,25)(26,32)(27,30)(28,31)(33,34,39,36)(35,40,45,43)(37,46,48,41)(38,42,44,47)(1,2,6,3)(4,9,11,7)(5,8,13,10)(12,15,16,14)(17,19,22,28)(18,23,25,31)(20,27,21,26)(24,32,29,30)(33,35)(34,40)(36,43)(37,38)(39,45)(41,47)(42,46)(44,48)(17,20,22,21)(18,24,25,29)(19,26,28,27)(23,30,31,32)(33,34,39,36)(35,43,45,40)(37,41,48,46)(38,42,44,47)(1,3,6,2)(4,9,11,7)(5,8,13,10)(12,14,16,15)(17,21,22,20)(18,24,25,29)(19,27,28,26)(23,30,31,32)(33,36,39,34)(35,43,45,40)(37,46,48,41)(38,42,44,47)(1,4,6,11)(2,7,3,9)(5,12,13,16)(8,14,10,15)(17,19)(18,23)(20,26)(21,27)(22,28)(24,30)(25,31)(29,32)(33,37)(34,41)(35,44)(36,46)(38,45)(39,48)(40,42)(43,47)(1,5)(2,8)(3,10)(4,12)(6,13)(7,14)(9,15)(11,16)(17,18)(19,23)(20,24)(21,29)(22,25)(26,30)(27,32)(28,31)(33,38,39,44)(34,42,36,47)(35,37,45,48)(40,46,43,41)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.